Modern SeamanshipD. Van Nostrand Company, 1918 - 712페이지 |
도서 본문에서
97개의 결과 중 1 - 5개
30 페이지
... means known of preserving wire from rusting , but it involves exposing the wire to a very high temperature , which for certain grades of steel may be injurious . A process of zinc electro - plating has been tried with considerable ...
... means known of preserving wire from rusting , but it involves exposing the wire to a very high temperature , which for certain grades of steel may be injurious . A process of zinc electro - plating has been tried with considerable ...
43 페이지
... means of a marline - spike , and the strand tucked through once in its full size , then reduced in size by cutting away a certain number of threads , tucked a second time , reduced once more in size and tucked again . It is thus tucked ...
... means of a marline - spike , and the strand tucked through once in its full size , then reduced in size by cutting away a certain number of threads , tucked a second time , reduced once more in size and tucked again . It is thus tucked ...
47 페이지
... means of a jigger . Hammer the strands down in place , cut each strand down to one - half size and tuck again , hauling through with a jigger as before . Cut the strands down to one - quarter and tuck again . Hammer down all strands and ...
... means of a jigger . Hammer the strands down in place , cut each strand down to one - half size and tuck again , hauling through with a jigger as before . Cut the strands down to one - quarter and tuck again . Hammer down all strands and ...
62 페이지
... means of a lever ; a small force being ap- plied with a long arm to overcome a large force acting with a short arm . It should be noted that the forces whose moments are opposed to each other may act on opposite sides of the fulcrum ...
... means of a lever ; a small force being ap- plied with a long arm to overcome a large force acting with a short arm . It should be noted that the forces whose moments are opposed to each other may act on opposite sides of the fulcrum ...
74 페이지
... means a loss of power . As the power of a tackle depends upon the number of parts at the movable block , we have the rule that whenever circum- stances permit , the block having the greater number of parts- or in other words , the block ...
... means a loss of power . As the power of a tackle depends upon the number of parts at the movable block , we have the rule that whenever circum- stances permit , the block having the greater number of parts- or in other words , the block ...
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abaft anchor angle beam Bend bight blast block boat boom cable capstan Carrick Bend carry chain clear clear-hawse collision compass connected convenient course coxswain crossing danger davit deck direction distance engines fathoms feet force forward friction Friction Band gear going ahead halyards handling hauling hawse hawse-pipe hawser head heavy helm hemp hook keel keep knots length let go lift lower manila mast men-of-war miles necessary oars pass pendant Plate port side pump riding rope Round Seizing rudder rules running sail sailing-vessel screw sea-anchor shackle shaft sheave ship ship swings signal slack small-stuff sound spar speed Splice starboard steam steam-vessel steamer steering stern stop storm strands surf swing swivel tackle tension tide tons towing tube turn U. S. Navy United States Navy unshackled usually valve vessel weather weight white light wind windlass wire yard